Pump for speedometers.



. C. PROUY.

PUMP FR SPEEOMETERS. APPLICATION FILED MAR. 23. 1914. RENEWEU AUG. 6. 91?.

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PROUTY, OF AURORA, ILLINOI THE VAN SIOKLEN COMPANY, A CORPORATION OF ILLINOIS. ,L ja

, @Mm PUMP FOR SPEEDOMETERS.

To all 'whom 'it may concern.'

Be it known that I, THEoDoRn C. PRoU'rY, a citizen of the United States, residing at Aurora, in the county of Kane and State of Illinois, have invented certain new and use- .ful Improvements in Pumps for Speedometers, of which the following is a specifica tion.

This invention relates to improvements in pumps for speedometers, and has for its objectto provide an improved pump comprising a pair of intermeshing cogs or pumping elements of a type well known in general pumping construction.

My invention further comprises a new and improved arrangement for supporting and driving suoh'pumping elements.

These and other objects will be set forth and illustrated in the following specication and accompanying drawings,4 in which;

V Figure 1 is a longitudinal section through a pump embodying my invention;

Fig. 2 is a side/.elevation of the shaft;

Fig. 3 is a transverse section along the line 3-3 of Fig. 1;-

Fig. 4 is a side elevation showing the arrangement of'the end plates and bearings.

Like numerals refery to like elements throughout the drawings, in which;

10 designates generally a casing of suitable contour in which =are provided the inlet 11 and outlet 12, as shown in Fig. 3. -This casing is provided with the end plate 13 *closing one end thereof and the end plate 14 closing the other end thereof. The end plate 13 is provided with the supporting axle 13a formed integral therewith and adapted to extend through the casing 10 and-seat inthe aperture 14a 1n the end plate 14. The end plate 13 is further provided with. the inwardly extending bearing portion 13 centrally bored or apertured, as indicated by numeral 13". A number of cross apertures 13d extend from'the outer side of this bearing portion 13b from the central bore or .aperture 13, as shown for example in Fig. 4. A bear ing plate 15 is' carried by the end plate 14and comprises a detachable portion thereof, as

Specioation of Letters Patent.

vvided in bearing portion 15a. extremities of these y sembled, -being located S, ASSIGNOR, BY MESNE ASSIGNMENTS, T0

Patented Fe Renewed August e, 1917, serial No. 134,787..

indicated in Fig. 4. This bearing plate l5 1s provided with bearing portion 15a similar in construction the inwardly extending Y to bearing 13b and apertured or bored as. indicated by iumeral 15b, the bore or aperture 15b being in alinement with ap'erture 13. Similar cross apertures 15c are pro- The inner bearing portions '15a- 13b are spaced apart a purpose to be explained below. A rotatable cog or pump element 16 is rotatably mounted upon the axle 13a, as shown in Fig. 1, and is provided with the usual form of teeth 16a. A similar rotating element 17 is rotatably mounted upon the bearings 13b between the end Fig. 1, this cog being centrally apertured or bored as indicated by numeral 17a to rota.

tably fit upon bearing portions 15--13b and having teeth'17b meshing with the teeth of pump element 16. The pumping element 17 is the 'driving or actuating element and to provide for driving the'saine .1 utilize the shaft 18 extending through the apertures 15th-13b and journaled therein. This shaft 18 carries a collar 19 'intermediate its extremities, this collar, when the device is as between thef inner ends of ,the bearings 15a-'L13b in the bore 17 of the umpingv element 17, this collar closely fitting the said bore. 1n the embodiment shown in .the drawings, I construct this collar of comparatively soft metal such as alloy or the like, shrunk on or otherwise securely attached to the shaft 18. I then, by means of a set or punchl indent portions of the pumping elements lar 19, as indicated by numeral 17C, 'see Fig. 3.

In constructing and arranging my device I preferably leave spaces or tween each'side of the collar` 19 and the adjacent -extremity of the bearing portions 13k-15B. In theseichambers or-spacesll when the device is assembled, and as is well.

known to those skilled in the-art, a certain amount of this 17 .into said col-v,v

chambers 20 bey a suitable distance for plates 13,14, as shown in'V lubicantwill work its wav secured to said shaft and having embedded along the rod 18 and along the outer surface \of the bearings 13b--151 between suchbearings and the inner periphery of the aperture 17a of pumping element 17. This lubricating effect is enhanced by theuse of cross' byf` the use of my invention, as set forthy and shown herein, I rovide a substantial gear bearing surface or the. actuating element 17, at the same time providing a similar bearing support or journal for the driving shaft While also arranging for positive` and eilicient driving relation between said shaft and actuating pump element. At the same time my construction and arrangement enables me to readily assemble and disassemble the entire device, as Will be apparent from examination of the drawings and reading of the specification, it being merely necessary to remove end plate 13, together with bearing plate 15 to permit the entire removal of the pump structure from the casing.

While I have shown and described my device With more or less particularity, I do not Wish to be restricted to such showing or description beyond the scope of thel appended claims.

What I claim is v 1. In a device of the class described, the combination of rotatable fiuid actuating mechanism, bearing mechanism upon Which said rotatable mechanism is rotatably mounted and provided with a concentric axial bore, shaft mechanism extending through and journaled in said axial bore, a collar therein portions of said-rotatable luid ac tuating mechanism, whereby said rotatable fluid actuating mechanism and said shaft rotate in unison. i

2.' In a device of the class described, the combination of rotatable pumping mechanism provided with a longitudinal axial bore, bearing mechanism extending into the axial bore of said pumping mechanism and upon which said pumping mechanism is rotatably mounted, said bearing mechanism being provided with a concentric axial bore,

shaft mechanism rotatably journaled in the axial bore of said bearing mechanism, and a collar mounted on said shaft mechanism and located in the axial Abore of the pu1nping mechanism to operatively connect said rotatable pumping and shaft mechanism.

ber of said rotatable vsaid pumping Vmember and Lacasse combination of rotatable pumping mechanism provided With a'n axial bore, bearing mechanism extending into the bore at eac end of said rotatable pumping mechanism l arranged to leae a chamber at or near the center of the-bore of the rotatable pumping mechanism and in turn provided with concentric axial bores, shaft mechanism rotatably journaled' inthe bore of said bearing mechanism, and a collar carried b'y said ro'- tatable shaft and located in the axial champumping mechanism, and operatively connecting and shaft mechanism together.

f1. In a device of the'class described, the

'said' pumping combination of rotatable pumping mechanism rovided with axial bores, bearings exten ing into each end of the axial bore 0f said pumping mechanism upon which said pumping mechanismv is' rotatably mounted and constructed to leave a centrally lc catedf` pumping mechanim;

axial chamber in said and a collar mounted on and secured to sai beit of said pum ing mechanismv and into are em edded so as to form an operative connection between said shaft andA pumping shaft mechanism in the central axial chamV which ortions o said pumping mechanism plates being provided with inwardly extend ing bearin portions, said bearing portions belng bore or apertured, a longitudinally bored mmping member rotatably mounted on sai bearing portions extending through the apertures in said bearing portionsy and journaled therein, said shaft being provided with a collar engaging said pumping mem-' ber and mounted in the aperture therein.

6. In a device of the class described, a casing, end plates for said casing, said end plates being provided With inwardly extending bearing portions, said bearing portions being" bored or apertured, a longitudinally bored pumping member rotatabl mounted on said bearing portions, a sha extending through the apertures "in .Said bearing portions and journaled therein, said shaft being provided with a collar engaging mounted in the aperture therein, said collar being spaced from and located between said bearing portions Whereby spaces are afforded for oil or grease to lubricate said pumping member and shaft. I

7.- In a device of the class described, a casing, end plates for said casing, said 'end plates being provided vwith inwardly extending bearing portions, said bearing portions being bored or apertured, a longitudi nally bored` pumping member rotat'abl mountedon said bearing portions, a sha extending through the apertures in said and shaft, said bearings being cross aperbearing portions and journaled therein, said tured to permit access of said oil 0r grease. 10 shaft being provided with a collar engaging In testimony whereof, I have subscribed said pumpingv member and mounted in the -m'y name.

5 aperture therein, said collar being spaced THE'ODORE C. PROUTY. from and located between said bearing por- Witnesses:

tions whereby spaces are afforded for oil or HENRY A. PARKS,

grease to lubricate said pumping member HELEN B. FREUND. 

